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human-computer-interaction
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Total 45 records
A virtual testbed for studying trust in ambient intelligence environments
, Article 2nd International Conference on Human Aspects of IT for the Aged Population, ITAP 2016 and held as a part of 18th International Conference on Human-Computer Interaction, HCI International 2016, 17 July 2016 through 22 July 2016 ; Volume 9755 , 2016 , Pages 101-111 ; 03029743 (ISSN); 9783319399485 (ISBN) ; Malek Makan, M ; Nazari Shirehjini, A.A ; Malek Mohammadi, Z ; Zhou, J ; Salvendy, G ; Sharif University of Technology
Springer Verlag
Abstract
Ambient Intelligence is a new paradigm in information technology that creates environments able to detect and respond to users’ needs, actions, behaviors and feelings. User trust plays an important role in accepting Ambient Intelligence environments. In this paper we describe the design and implementation of a virtual reality based testbed for studying trust in Ambient Intelligence Environments
A new human interactive proofs system for deaf persons
, Article International Conference on Information Technology: New Generations, ITNG 2008, Las Vegas, NV, 7 April 2008 through 9 April 2008 ; 2008 , Pages 807-810 ; 0769530990 (ISBN); 9780769530994 (ISBN) ; Shirali Shahreza, M ; Sharif University of Technology
2008
Abstract
Nowadays the Internet users are from different ages and groups. Disabled people are a group of the Internet users. Some websites are especially created for disabled people and public access to them is undesirable. In this paper, for the first time, a method is introduced for distinguishing between deaf persons and other users using a new HIP (Human Interactive Proofs) system. In this method, the sign language is used. A word is shown as a movie using a sign language. The user should recognize the word and select it from a list. Only deaf persons can understand sign language and recognize the word, therefore other persons and also computer programs cannot enter the website. This project has...
Human Facial Activity Recognition using RGBD Videos
, M.Sc. Thesis Sharif University of Technology ; Jamzad, Mansoor (Supervisor)
Abstract
Human facial activity recognition is one of the endeavors to improve human-computer interaction. Recognition of excitements and emotions on human face by machine and makinga corresponding reaction is essential for man machine intraction.The purpose of this project is recognizingactivities such as speaking, eating, laughing, agree and disagree which have more complexity than usualemotions such as fear and happinesscontained in common datasets.So, adataset in accordance with the above mentioned 5 activities was collected and the appropriate feature vector for analyzing these face activities were implemented.Distance between the interest points located on the face were used as parameters in...
Design and Usability Evaluation of a Meta User Interface to Support Interaction with Ambient Intelligence
, M.Sc. Thesis Sharif University of Technology ; Nazari Shirehjini, Ali Asghar (Supervisor)
Abstract
The aim of this thesis is the requirements analysis, design, proof-of-concept implementation and user evaluation of a novel user interface that is specifcally developed to support interaction with ambient intelligence systems. The focus of the user interface is rather on interacting with ambient intelligence, a meta system that comes into existence as the result of the coherent behavior and collective intelligence of interconnected smart devices and systems of a domain such as meeting rooms or smart homes.To design the user interface, we conducted an empirical user and task analysis and elaborated requirements, defning the scope of human interaction with ambient intelligence. The captured...
User Centric Design and Evaluation of a Context Aware Intelligent UI for IOT based Smart Environments
, M.Sc. Thesis Sharif University of Technology ; Nazari Shirehjini, Ali Asghar (Supervisor)
Abstract
Ambient intelligence is a new paradigm in human computer interaction in which smart actor interact with the surrounding environment and be helped in to reach their goals. One of the main principles in smart environments is the interaction between user and the system. Better interaction leads to a better user satisfaction. In explicit interaction, context plays an important role in interaction quality. One of the main parameter in interaction is the environment complexity. Environment complexity itself consists of other factor such as size of the room, number of devices, density of devices, size of the devices and etc. In this study, we have investigate the effect of two factor, environment...
Improving the Design of Menus in User Interfaces
, M.Sc. Thesis Sharif University of Technology ; Heydarnoori, Abbas (Supervisor)
Abstract
The design and development process of menu systems has always been a focus of researchers and engineers in the fields of software engineering and human-computer interaction. Considering the large and complex nature of the design space, it is nec- essary to provide automatic methods that aid designers during the design process. In this study, natural language processing is used to investigate the semantic relationship between menu system commands. Users expect related commands to be conveniently located next to each other, and a properly designed interface satisfies this need. As a result of this research, a fast-text-based model is developed that uses the data of past menu systems. In a...
Web 1.0 to web 3.0 evolution: Reviewing the impacts on tourism development and opportunities
, Article Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 7 September 2010 through 8 September 2010, Brescello ; Volume 6529 LNCS , 2011 , Pages 184-193 ; 03029743 (ISSN) ; 9783642183478 (ISBN) ; Barzegar, Z ; Isaai, M. T ; Sharif University of Technology
Abstract
The most important event following the establishmenet of the Internet network was the Web introduced by Tim Berners-Lee. Websites give their owners features that allow sharing with which they can publish their content with users and visitors. In the last 5 years, we have seen some changes in the use of web. Users want to participate in content sharing and they like to interact with each other. This is known as Web 2.0. In the last year, Web 2.0 has reached maturity and now we need a smart web which will be accordingly be called Web 3.0. Web 3.0 is based on semantic web definition. Changing the way of using the web has had a clear impact on E-Tourism and its development and also on business...
A meta user interface for understandable and predictable interaction in AAL
, Article Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 2 August 2015 through 7 August 2015 ; Volume 9194 , July , 2015 , Pages 456-464 ; 03029743 (ISSN) ; 9783319209128 (ISBN) ; Nazari Shirehjin, A. A ; Daraei, S ; Sharif University of Technology
Springer Verlag
2015
Abstract
The aim of this paper is the design and development of a novel user interface to interact with a meta system. Our focus is rather on interacting with Ambient Intelligence as a whole, which would for example enable users to influence the overall behavior and attributes of dynamic device compositions. We call such interfaces Meta User Interfaces. The design details of a proposed user interface as well as a cognitive walkthrough evaluation are presented in this paper
Mental model development using collaborative 3D virtual environments
, Article Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 17 July 2016 through 22 July 2016 ; Volume 9749 , 2016 , Pages 279-290 ; 03029743 (ISSN) ; 9783319398617 (ISBN) ; Soltani Nejad, F ; Saniee Monfared, G ; Semsar, A ; Shirmohammadi, S ; Sharif University of Technology
Springer Verlag
2016
Abstract
Smart environments are complex systems encompassing multitude of devices with complex interconnections and interactions. User must not only be able to figure out the devices’ functionalities, but also understand the architectural and semantic relations between various components. Providing such information leads to better understanding and user satisfaction, if users get the appropriate mental models. One way to train users about such smart environments is Interactive Realistic Virtual Reality based Simulations (IRVRS): multimedia rich collaborative 3D virtual environments. IRVRS also facilitate easy and inexpensive access to population masses, thus they can be used for conducting large...
Clustering search engine log for query recommendation
, Article 13th International Computer Society of Iran Computer Conference on Advances in Computer Science and Engineering, CSICC 2008, Kish Island, 9 March 2008 through 11 March 2008 ; Volume 6 CCIS , 2008 , Pages 380-387 ; 18650929 (ISSN); 3540899847 (ISBN); 9783540899846 (ISBN) ; Abolhassani, H ; Sharif University of Technology
2008
Abstract
As web contents grow, the importance of search engines became more critical and at the same time user satisfaction decreased. Query recommendation is a new approach to improve search results in web. In this paper we represent a method to help search engine users in attaining required information. Such facility could be provided by offering some queries associated with queries submitted by users in order to direct them toward their target. At first, all previous query contained in a query log should be clustered, therefore, all queries that are semantically similar will be detected. Then all queries that are similar to user's queries are ranked according to a relevance criterion. The method...
Drawing CAPTCHA
, Article ITI 2006: 28th International Conference on Information Technology Interfaces, Cavtat/Dubrovnik, 19 June 2006 through 22 June 2006 ; 2006 , Pages 475-480 ; 13301012 (ISSN); 9537138054 (ISBN); 9789537138059 (ISBN) ; Shirali Shahreza, S ; Sharif University of Technology
University of Zagreb
2006
Abstract
Nowadays, many daily human activities such as education, commerce, talks, etc. are carried out through the Internet. In cases such as the registering in websites, some hackers write programs to make automatic false enrolments which waste the resources of the website while this may even stop the entire website from working. Therefore, it is necessary to tell apart human users from computer programs which is known as CAPTCHA (Completely Automated Public Turing test to tell Computers and Human Apart). CAPTCHA methods are mainly based on the weak points of OCR (Optical Character Recognition) systems while using them are undesirable to human users and esp. difficult in tools such as PDA's or...
Playbook: An animation-based game for improving children's creativity and problem solving skills
, Article 13th ACM SIGCHI Symposium on Engineering Interactive Computing Systems, EICS 2021, 8 June 2021 through 11 June 2021 ; 2021 , Pages 12-16 ; 9781450384490 (ISBN) ; Habibi, J ; Baghaei, N ; Sharif University of Technology
Association for Computing Machinery, Inc
2021
Abstract
In this paper, we describe the design, development and preliminary evaluation of a novel animation tool for smartphones and tablets, with the goal of improving creativity and problem-solving ability among novice users, mainly young children. The user first draws the objects with markers and crayons on paper and takes a photo with their mobile or tablet to import their drawings into the app as game sprites. They then design their animation scene and point to a part of the character and selecting its animation type from existing buttons. Hence the selected part is animated in a vertex shader while ensuring a smooth transition with the non-pointed part. The results of a preliminary evaluation...
Human-Machine Interaction using Hand Gesture Recognition
, M.Sc. Thesis Sharif University of Technology ; Manzuri Shalmani, Mohammad Tghi (Supervisor)
Abstract
Dynamic hand gesture is an efficient approach used in Human Computer Interaction (HCI). The goal is to recognize and analyze the different hand gestures in a recorded video. There are some associated challenges such as video noises, illumination changes, rotation variance, hand occlusion which make the process more complicated.To do the research we used five different gestures out of the Sheffield hand gesture dataset which is collected from six persons under three different backgrounds and two illumination conditions. This procedure needs image processing in order to detect and segment the important parts involved in images such as hands and analyzing the changes and motions of them. We...
Real Tme Recognition of American Sign Language Based on Hand Posture Using RGB-D Camera
, M.Sc. Thesis Sharif University of Technology ; Jamzad, Mansour (Supervisor)
Abstract
Sign Language Recognition using cameras is an alternative way of human communication with personal computers. These systems don’t need to use keyboard. They are used when touching keyboard is not possible or for what ever reason, when we don’t want to use keyboard. In this problem the person shows one of the alphabets with his hand and we capture and process that in real-time to recognize the letter. The problem of previous works in this area are the decreasing rate of detection in condition where the angle of sign and viewer changes. The purpose of our work is getting better result by using depth image from Kinect. We use Pugeault and Bowden dataset (that has fingerspelling sign in multiple...
Speech Emotion Recognition Using Deep Learning and Frequency Features
, M.Sc. Thesis Sharif University of Technology ; Ghaemmaghami, Shahrokh (Supervisor)
Abstract
Speech is the most natural and widely used approach to communication between people and the fastest communication between humans and computers. Advances have been made in this area to achieve complete success in the natural human-computer relationship. The big challenge in this way is the inability of the computer to recognize the user's feelings; Therefore, in speech processing, one of the things that should be studied and considered is; detection of emotion from a speech by a computer. This is because Emotion recognition of speech can help extract meanings and improve the functioning of the speech recognition system. This study first defined the emotions and materials needed to build...
Estimation of muscle force with EMG signals using Hammerstein-Wiener model
, Article IFMBE Proceedings, 20 June 2011 through 23 June 2011 ; Volume 35 IFMBE , June , 2011 , Pages 157-160 ; 16800737 (ISSN) ; 9783642217289 (ISBN) ; Khorsandi, R ; Farzampour, S ; Zahedi, E ; Sharif University of Technology
2011
Abstract
Estimation of muscle force is needed for monitoring or control purposes in many studies and applications that include direct human involvement such as control of prosthetic arms and human-robot interaction. A new model is introduced to estimate the force of muscle from the EMG signals. Estimation is based on Hammerstein-Wiener Model which consists of three blocks. These blocks are used to describe the nonlinearity of input and output and linear behavior of the model. The nonlinear network is designed base on the sigmoid network. The introduced model is trained by some data sets which are recorded from different people and tested by some other data sets. The simulation results show low error...
Passive worm and malware detection in peer-to-peer networks
, Article Proceedings - IEEE/IFIP International Conference on Embedded and Ubiquitous Computing, EUC 2010, 11 December 2010 through 13 December 2010 ; 2010 , Pages 561-565 ; 9780769543222 (ISBN) ; Movahed, A ; Kharrazi, M ; Sharif University of Technology
Abstract
Today P2P networks are responsible for a large amount of traffic on the Internet, as many Internet users employ such networks for content distribution. At the same time, P2P networks are vulnerable to security threats such as Internet worms and facilitate their propagation. Internet worms and more generally malware are a major concern to the network security community. There are many different type of worms in the wild, mostly categorized based on how they find and infect their new victims (i.e. active, passive, etc.). In this paper, we investigate a new approach for detecting passive worms and malware in P2P networks based on the popularity of files in the network. As part of our...
A novel secure bilinear pairing based remote user authentication scheme with smart card
, Article Proceedings - IEEE/IFIP International Conference on Embedded and Ubiquitous Computing, EUC 2010, 11 December 2010 through 13 December 2010 ; 2010 , Pages 578-582 ; 9780769543222 (ISBN) ; Sabzinejad, M ; Movahed, A ; Sharif University of Technology
Abstract
Authentication schemes play vital roles in computer and communication security. In order to authenticate the remote users, password based schemes have been widely used. In this paper we introduce a secure remote user authentication scheme based on bilinear pairing that satisfies all security requirements which are mentioned for password based authentication schemes using smart card
Formants analysis of American, Australian and British accents
, Article Proceedings of the 4th IASTED International Conference on Human-Computer Interaction, HCI 2009 ; 2009 , Pages 336-341 ; Asadinia, M ; Ghorshi, S ; Sharif University of Technology
Abstract
This paper compares and quantifies the differences between formants of speech across accents. The crossentropy information measure is used to compare the differences between the formants of vowels of three major English accents British, American and Australian. An improved formant estimation method, based on a linear prediction model feature analysis and a hidden Markov model of formants, is employed for estimation of formant trajectories of vowels and diphthongs. The impact of vocal tract length on accent is also examined. Comparative analysis of formant space of the three accents indicates that these accents are mostly conveyed by the first two formants
Applications of axiomatic design theory in design for human safety in manufacturing systems: a literature review
, Article MATEC Web of Conferences, 13 September 2017 through 15 September 2017 ; Volume 127 , 2017 ; 2261236X (ISSN) ; Houshmand, M ; Fatahi Valilai, O ; Slatineanu L ; Sharif University of Technology
Abstract
Design for Human Safety (DfHS) is an approach to integrate knowledge of human safety in the design process. DfHS is multi-disciplinary in its nature, requiring many kinds of information and knowledge. Number of DfHS studies tried to apply Axiomatic Design (AD) to achieve their aims. The purpose of this paper is to review the literature on application of AD in DfHS in manufacturing systems and to propose a roadmap for future DfHS works. This paper examines the number and type of publications dealing with this context. The review covers papers published between 1990 (when AD was introduced first) and 2017. It is based on a range of combinations of the following keywords: "Axiomatic design" and...